Monday, March 16, 2026

Case of the Week 803

For this week's case, we have a worm submitted from an otherwise asymptomatic teenager. No further history was provided. What is your identification, and how would you sign this case out?


Based on this gross examination, we dissected the worm and was able to get the following eggs:










6 comments:

Anatoly said...

Toxocara sp. based on anterior end narrow lateral alae (T.canis; if they are actually broader but collapsed in this specimen, may be T.cati) and rough surface of thick-shelled irregular eggs. Teenager's dog or dog teenager.

Anonymous said...

The cephalic alae and pitted shell of the eggs indicate Toxocara species. The nematode is not frequently encountered and I would err on the conservative side and not go further.
Florida Fan

Mje said...

Ascarid - large round worm; suspect Toxocara cati with broad alae.

Anonymous said...

Toxocara canis/Patrik

Anonymous said...

Toxocara canis/cati. Not so sure about the difference.
Probably the teenager found it somewhere or from the family pet.
In this country, public health is free so mother brings this specimens saying their child have it. We see throught the lie quickly and the response is that the children get free attention and identification, but the pets health is not free (and very very expensive!) and if the cat/dog have this, the children probably too. And they are absolutely right! This specimens always lead to a positive ELISA reaction in the child.

-HLCM fan.

Anonymous said...

You’re absolutely right about children public health costs versus veterinary health. The tea tree oil for my dog was $11.00 a bottle and my Pantene bottle was $3.00. However I rather worked on these specimens than the Morgellons. I had a few difficult times with some medical staff when dealing with delusional parasitosis, they threatened to report me to their doctor. After I talked with their doctor, he laughed and said:” Now I know what to do! The next one who comes in I will send to another doctor”.
Florida Fan